合成代谢是生成和储存能量，而分解代谢则是能量的释放。
Anabolism is when energy is created and stored, and catabolism is when energy is released.
因此，确认那些可以消化纤维素的酶的基因，然后修改并重组这些基因形成新的代谢途径，就可以生成一些系统，能够消化整株植物，并将其转化为乙醇。
Identifying the genes for the enzymes that do this, modifying them and assembling them into new pathways would produce systems that could digest the whole plant and turn it into ethanol.
有氧代谢的速度随着肌肉有氧运动的增加而提高，因此，通过有氧的方式，可以生成更多的能量。
The speed of which aerobic metabolism happens increases with aerobic activity in muscles. Thus, more energy can be generated aerobically.
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